Many people asked for such to supress DataTable warnings etc. I made this for my server originally to hide DataTable and CreateFragmentsFromFile errors. There's nothing really more to say.

Install:
-Download cleaner.zip
-Unpack it in your sourcemod folder

Adding new lines to block:
-Open cleaner.cfg
-Place a substring of the text you want to block in a new line
-If enough people request regexp filtering I will add that in the future but I think this should be enough

Tested on several operating systems and game combinations but please let me know in case you find a non-supported mod and I'll add support for that!

@SM devs: is there a way to read signatures as binary text from gamedata for non-supported libraries?

Changelog:

2012.10.25:
-Added a configurable cfg, new method
2012.10.27 #1:
-Fixed not reading config file properly
-Fully working with older engines, it used to partially work only
2012.10.27 #2
-Recompiled the ep2v version to work with the new libraries
2012.10.28
-Updated L4D2 windows signature
2012.12.29
-Fixed a bug with not properly removing Windows line endings